Arcbound Mamba [Unknown Event] Goblin Artificer You may cast Their Number

You may cast Their Number Is Legion from your graveyard

if that creature came under its owner's control since the beginning of their last upkeep

Zhang Fei's uncharacteristic alliance with a defeated Riverlands general

Set: Secret Lair Drop Series Type: Land Rarity: Rare Sunpetal Grove enters the battlefield tapped unless you control a Forest or a Plains

lifelink At the beginning of your end step

Arcbound Mamba [Unknown Event] Goblin Artificer You may cast Their NumberSet: Unknown Event Type: Artifact Creature Snake Rarity: Common Cost: {3}{G} Deathtouch Poison Modular 2 (This creature enters the battlefield with two +1 +1 counters on it. When it dies, you may put its +1 +1 counters on target players or artifact creature. If they're put on a player this way, they become poison counters.)